Construction Calculator
Interactive estimation tool

Floor Tile Calculator for Boxes, Grout and Adhesive

Estimate floor tile quantities, box counts, grout spacing, adhesive needs and cutting waste for renovation and construction projects.

Estimation Inputs

Enter measurements in the selected display units. The calculator converts them to canonical formula units before running the estimate.
m²

Net floor surface area.

m

Physical tile length.

m

Physical tile width.

pcs

Number of tiles packed in one box.

%

Extra allowance for cuts and breakage.

m

Spacer width between tiles.

m

Average adhesive layer thickness.

Pricing & Rates

Prices are editable per estimate. Regional settings only provide starting rates, tax and currency labels.
AED

Price per purchase unit used by this calculator.

AED

Applied to the estimated purchase quantity.

%

Use 0 if tax is not applicable.

Estimate Outcome

Tile GridTile layout: 0.60m x 0.60m
Create a project and room first, then return here to attach this estimate to the BOQ.

Calculation guide and formulas

Use this tile calculator to plan floor tile purchases with tile size, grout joint width, tiles per box, adhesive thickness and waste percentage.

Nominal Tile Area = (Tile Length + Grout) × (Tile Width + Grout); Tiles = ceil(Floor Area / Nominal Tile Area)

Worked example

A 20 m² floor using 60 × 60 cm tiles with 3 mm grout needs about 55 tiles before waste. With 10% waste, order 61 tiles, or 16 boxes when each box contains 4 tiles.

Frequently asked questions

  • Q: How much tile waste should I include?

    A: For straight layouts use about 10%. Diagonal layouts, small rooms or patterned tile work may need 12% to 15%.

  • Q: Does grout spacing change tile quantity?

    A: Yes. Grout spacing slightly increases the nominal coverage of each tile, which affects the final count and box estimate.